90 Lincoln Town Car Transmission
Introduction
The 1990 Lincoln Town Car is a full-size luxury sedan that was produced by Ford Motor Company. It was available in two trim levels: the base Executive Series and the top-of-the-line Signature Series. Both trim levels came standard with a 4.6-liter V8 engine and a four-speed automatic transmission.
Transmission Specifications
The 1990 Lincoln Town Car’s four-speed automatic transmission is known as the AOD (Automatic Overdrive) transmission. It is a electronically controlled transmission that features overdrive, which helps to improve fuel economy at highway speeds. The AOD transmission is also equipped with a lock-up torque converter, which helps to reduce transmission slippage and improve efficiency.
Here are the specifications for the 1990 Lincoln Town Car’s AOD transmission:
* Type: Four-speed automatic with overdrive
* Gear ratios:
* First gear: 2.40:1
* Second gear: 1.46:1
* Third gear: 1.00:1
* Fourth gear (overdrive): 0.67:1
* Final drive ratio: 2.73:1
Transmission Problems
The 1990 Lincoln Town Car’s AOD transmission is generally reliable, but it can experience some problems over time. Some of the most common transmission problems include:
* Slipping gears: This can be caused by a variety of factors, including worn-out clutch packs, a faulty torque converter, or a problem with the transmission’s hydraulic system.
* Hard shifting: This can be caused by a variety of factors, including a faulty shift solenoid, a problem with the transmission’s governor, or a problem with the transmission’s computer.
* Leaking fluid: This can be caused by a variety of factors, including a worn-out transmission pan gasket, a faulty transmission cooler, or a leak in the transmission’s case.
Transmission Maintenance
To help prevent transmission problems, it is important to perform regular transmission maintenance. This includes:
* Changing the transmission fluid and filter: The transmission fluid should be changed every 30,000 miles or so, and the filter should be changed at the same time.
* Inspecting the transmission for leaks: The transmission should be inspected for leaks on a regular basis. Any leaks should be repaired immediately.
* Having the transmission serviced by a qualified mechanic: The transmission should be serviced by a qualified mechanic every 60,000 miles or so. This service includes inspecting the transmission, changing the fluid and filter, and adjusting the shift bands.
Conclusion
The 1990 Lincoln Town Car’s AOD transmission is a reliable and efficient transmission. However, it can experience some problems over time. By performing regular transmission maintenance, you can help to prevent these problems and keep your Town Car running smoothly for many years to come.
